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(11) | EP 1 133 144 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Image forming apparatus and image reading device for use in the apparatus |
| (57) An image forming apparatus which forms an image on a recording material, which has:
a writing section to write according to the image data; an oscillator to generate
a synchronized synchronizing clock signal; a spreading clock generator to spread the
band of a synchronized reference clock and generate spreading clock signals; and a
plurality of control circuits to control the image forming apparatus and each section
of the image forming apparatus including a writing control circuit to control the
writing section. More than one control circuits in the control circuits other than
the writing control circuit are driven by the spreading clock signals, and the writing
control circuit is driven by the synchronizing clock signal. |